<?php

/**

* Flags anomalies in JSON payloads based on hard-coded limits.

*

* @param string $jsonPayload The JSON payload to validate.

* @return array An array of flagged anomalies. Empty array if no anomalies found.

*/

function flagJsonAnomalies(string $jsonPayload): array

{

$anomalies = [];

$data = json_decode($jsonPayload, true);

if ($data === null) {

$anomalies[] = ['error' => 'Invalid JSON format'];

return $anomalies;

}

// Hard-coded limits (example values - adjust as needed)

$max_items = 10;

$max_string_length = 255;

$allowed_fields = ['id', 'name', 'value']; // Example: Allowed fields

// Check for excessive number of items

if (is_array($data) && count($data) > $max_items) {

$anomalies[] = ['type' => 'items_count', 'value' => count($data), 'limit' => $max_items];

}

// Check for string lengths

foreach ($data as $key => $value) {

if (is_string($value) && strlen($value) > $max_string_length) {

$anomalies[] = ['type' => 'string_length', 'field' => $key, 'value' => strlen($value), 'limit' => $max_string_length];

}

}

//Check allowed fields

if(is_array($data)){

foreach($data as $key => $value){

if(!in_array($key, $allowed_fields)){

$anomalies[] = ['type' => 'unallowed_field', 'field' => $key, 'value' => $value, 'allowed' => $allowed_fields];

}

}

}

return $anomalies;

}

//Example Usage (replace with your actual JSON payload)

//$jsonPayload = '[{"id": 1, "name": "Product A", "value": 100}, {"id": 2, "name": "Product B", "value": 200}, {"id": 3, "name": "Product C", "value": 300}, {"id": 4, "name": "Product D", "value": 400}, {"id": 5, "name": "Product E", "value": 500}, {"id": 6, "name": "Product F", "value": 600}, {"id": 7, "name": "Product G", "value": 700}, {"id": 8, "name": "Product H", "value": 800}, {"id": 9, "name": "Product I", "value": 900}, {"id": 10, "name": "Product J", "value": 1000}, {"id": 11, "name": "Product K", "value": 1100}]';

// $anomalies = flagJsonAnomalies($jsonPayload);

// print_r($anomalies);

?>